Previous games in the current year count, so MW2 selling over 1 million units in 2010 counts, it's about how many games can sell 1 million units THIS year.
A helpful table!
Console/Year | 2006 | 2007 | 2008 | 2009 | 2010* |
X360 | 3 | 11 | 27 | 26 | 22 |
PS3 | 0 | 5 | 17 | 17 | 21 |
Wii | 2 | 13 | 24 | 17 | 18 |
Weekly update - Last updated 18th December
Week/Console | X360 | PS3 | Wii |
September 18th |
1 | 0 | 0 |
September 25th | 1 | 1 | 1 |
October 2nd | 0 | 2 | 0 |
October 9th | 1 | 0 | 0 |
October 16th | 0 | 0 | 0 |
October 23rd | 1 | 1 | 0 |
October 30th | 2 | 2 | 0 |
November 6th | 0 | 0 | 0 |
November 13th | 2 | 1 | 1 |
November 20th | 0 | 0 | 0 |
November 27th | 1 | 3 | 0 |
December 4th | 0 | 1 | 1 |
December 11th | 1 | 1 | 2 |
December 18th | 1 | 1 | 3 |
December 25th | 1 | 1 | 1 |
January 1st | 0 | 0 | 1 |